Replace MAX232CPE With FTD chip

Anti-Spam · 2010-09-02T19:30:57+00:00

Probably been covered a thousand times in this forum, but have beendoing other things for quite a few years now. I designed many yearsago some Serial interface boards using the MAX232CPE RS232 chip. Ihave been asked by the owners of the product to change these to USBconnectivety. The FTD chips obviousley come to mind for such a task,but need some help please. We would like to replace the RS232 portwith a USB port. What I would ideally like to do, is remove the MAXchip altogether and replace it with a FTD chip. The problem for me isthat I did not write the Firmware for this project, so I am not in aposition to change anything as far as the Microcontroller Programmingis concerned (we do not have the source code). We use on the MAX chipTx, Rx and the CTS, RTS lines.What we would like to achieve is for the end customer for theinterface board, to be able to load the FTD drivers, connect using theUSB port, and use the board like nothing had changed. Is thispossible? any pointers please?PS I did ask FTD, but they just sent a data sheet with a few differentchips on, that I did not understand.Mark in Spain.

Sep 02, 2010 20 Replies

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Dave Platt 16 years ago

It might help, significantly, to know whether the host PC software you are referring to, is running under:

- MS-DOS

- An old version of Windows

- A more current version of Windows (e.g. XP or later), as a native Windows application

- Under some version of Windows, within a "DOS box" (DOS emulation window).

Dave Platt AE6EO Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads!

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